Fluid-cushioned bearing.



A. PONTEN.

FLUID CUSHIONED BEARING.

APPLIOATION FILED D30. 12, 190B.

Patented Feb. 23, 1909.

WITNESSES.

a. INVENTOR PATENT OFFICE,

ANDEHS PQNPEN, OF BERKELEY, CALIFORNIA.

FLUID--CUSHIONED BEARING.

Specification of Letters Patent.

. Yatented Feb. 2a, 1009.

Application filed December 12, 1908. Serial No. 467,193.

To all whom it may concern:

lie it known that LAnnnas l oivrnmacitizen of the United States, residing at Berkeley, in the county of Alameda and State of California, have invented certain new and useful lmprovements in Fluid Cushioned Bearings, of which the following is a specifi' tilll'Ull.

'l he ln'reinafter described invention re- -la Les to an improved fluid cushioned bearing for use more particularly-in connection with comparatirel hear shafts driven at a high mtatire pced; the object of the invention being the production of :t bcaringof the described character which will slowly adjust itself in all directions to the lateral strains placed thereon by the swinging action or grratonv motion of the rotating shaft extended therethrougln the compensating action of the hearing providing against shocks, jars or irregular strains being transmitted to the means driven thereby. thus securing the transmission of a uniform motion of rotation.

'lo comprehend the invention, reference -:hould he had to the accompanying sheet of drawings. wherein-- Figure l is a plan view of the outer casing or hell with its cover removed. within which ea ing or shell is titted the slide block and the bearing sleeve. the vsaid sleeve being partly sectioned \'e1.'tieall to illustrate the position ofits depending wall relative to the slide block. Fig. is a cross sectioned elex a lion taken on line it -.1: Fig. l of the drawings viewed in. the direction of the arrow. hi ii is a similar View taken on line 3 the; lot the drawings. 7

[n the drawings the numeral 1 designates the outer cylindrical shell or casing of the hearing. from the apertured bottom 2 of which springs the inner upwardly projecting circular wall 3. The said circular wall or flange 3 acting in conjunction with the inner face of the shell or casing 1 forms an. inner fluid receiving chamber 3', which chamber is closed by the cover plate 4 secured thereto preferabl x and held in place by means of the securing screw 5.

\Vithin the outer shell or casing 1 is fitted for horizontal lllOVGlllQllt in one direction, an open slide block 6, formed with the flattened faces 6 which register with the flattened faces 7 of the shell or casing 1 the cir enlar faces of the said slide block 6, con forming to the circular faces 8 of the inner wall of the shell or casing 1. The diameter of the slide block 6 through the circular )ortion thereof isslightly less than the L iameter of the shell or casing 1 on the same cross section, so that the said slide block is permitted horizontal movement in one direction, although confined against movement in the opposite direflion. 'ithin'cach flattened face (5' of the slide block 6 is cut a longittldinal groove or channel 8, which eonnnunicates with the curved passages 99 formed between the faces 7 of the said block and the faces 8 of the outer shell or easing l, which grooves or channels 8' form runways for the flow of fluid from one of the end passages to the opposing and passage, on the movement of the slide block (3 in either direction;

llithin the circular wall or flange 3 is fitted the bearing sleeve. 10, whichis slightly less in diameter than the said circular wall or flange 3, and through the said bearing sleeve 10 extends and works the spindle or shaft 10'. This bearing sleere 10 1s forii'ied with a projecting'shoulder extensioir 11, which terminates 1n the depending wall :12. The said depending wall, when the beg-wing sleeve is dropped into the circular w'all or flange 3, tits and works within the field 112' of the slide block (3. The flattened faces 13 of the depending wall 1'2 work a ains-t the inner flattened faces 13' of. the sli e block (3. the curved or circular faces 14 of the said wall 12 conforming to the curved inner faces 14 of the slide block (3. Inasmucha the depending wall12 is slightly lessin diameter than the Held 12 of the slide block 6. the same is permitted limited horizontal move ment therein, the horizontal movement of the said wall 12 being inan opposite direction to the horizontal movement pe mitted the slide block 6. i t

In each flattened face of the depending wall 12 of the bearing sleeve 10 is formed a longitudinal groove 01' channel 15, which communicates with the passages 1ti 16 be tween the faces 14 of the said wall 12 and the faces 14 of the slide block 6.

T he cover plate 4 is formed with a central aperture through which projects the spindle or shaft 10', and the said cover plate is shaped to bear onto the slide block 6 and the shouldered extension 11 of the bearing sleeve 10, although the ressure thereof onto said arts is not suificlent to interfere with the rec movement thereof within the outer shell or casing- 1.

The outer shell or casin 1 is illustrated, in theflpresent case, as attac ed to a non rotatthe securing bodts 17', Fig.' 3 of the ilffstructure 17, being held thereto by means 0 dra wmgs.

In assemblin the parts, the fluid receiving chamber 3" of the outer shell or casing is first filled with uicksilver, glycerin, or any viscousfluid. l he slide block 6 is then placed within the outershell or casing its 0 en field 12f retaining a portion of the fluid p need within the chamber 3. The bearing sleeve 10 is then fitted within the projectin circular'wall or flange 3, its de ending wal 12 rating within the open field 12 of the slide block, and the slide block and the bearing sleevelo held in place by securing to the outer wall or casing 1 the cover plate 4, which cover plate acts additionally to prevent the fluid splashin from within the fluid holding chambero the outer shell or casing durin the movement of the slide block 6 and depending wall'of the bearing sleeve 10.

B reason of the flattened"faces of the deen ing wall 12 actin against similar inner fhces of the slide bloc and the outer flattened faces-cf the said ,block acting against corresponding faces of the outer shell or casing 1, the bearin sleeve 10 is held a ainst rotation, althoug it is free to give 3 owly to lateral strains placed thereon by irregular rotation or gyrator movement of the spindle or shaft 10. The moment the said spindle or shaft varies from its vertical axis of rotation, the same acts against the bearing sleeve and seeks to ra id y throw the same outwardly. This ten ency for rapid outward movement of the bearing sleeve is re: sisted b the bod of viscous fluid sealed within t e outer s ell or casing, bearing res ectively against the curved end walls of the slide block and the vde ending extension of the bearing sleeve. owever, the body of fluid will slowly, but graduall give or change under the influence of the eforming force being acted thereon by the outward pressure exerted by the irregular movement of rotation of the spindle or shaft 10 out-v the, bearing sleeve 10, permitting the said sleeve to gradually give and slowly move under the influence of the pressure of the said rotating spindle or shaft, without transmitting such- Irregular motion of. the spindle 0r shaft to the mechanism driven thereby; the said fluid cushioned bearing thus acting as a compensating means for the rotating spindle or shaft.

Having thus described the invention what is claimed as new and desired to be protected by Letters Patent is 1'. A fluid cushioning bearing, the same comprising a non-rotating outer shell or casin having a fluid chamber therein, a slide lock held therein for horizontal movement in one direction, a laterally movable bearin sleeve provided with a downwardly extending wall held within the field of the slide block for horizontal movement in a direction opposing the movement of the slide block, d a cover platefor the outer shell or casi g acting to seal the fluid chamber thereof and hold the slide block and bearing sleeve within the said outer shell or casing.

2. A fluid cushioned bearing, the same comprising a non-rotating outer shell or was ing aving afiuid chamber therein, an 0 en slide block held therein against rotation ut free to move horizontall in one direction, a bearing sleeve provide with a depending wall held within the field of the open slide block against rotation but free to move horizontally in a direction opposed to the movement of the slide block, and channels or 'ooves cut in faces of the slide block and in faces of the depending wall of the bearing sleeve for permitting the shifting of the fluid held within the outer shell or casing on the movement of the said parts in either direction.

3. In a bearing for the described purpose, the combination with the outer shell or casing thereof havin a fluid chamber therein, of a slide block eld therein against rotation but free to move horizontally in one direction, a bearing sleeve, and connection between the sleeve and the slide block for holding the said sleeve against rotation while ermitting horizontal movement thereof in a direction opposin that of the slide block without transmitting such movement to the said block.

4. In a bearing for the described urpose, the combination with the outer shel or casing thereof having a fluid chamber therein, of a laterally movable bearing sleeve extended within the fluid chamber of the outer shell. or casin, and a slide block located Within the said fluid chamber for holding the .:.-aring sleeve against rotation.

in testimony whereof I have signed my name to this specification in the presence of -two subscribing witnesses.

ANDERS PONTEN. Witnesses N. A. AeKnn, D. B. RICHARDS. 

